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11th IEEE International Conference on Trust, Security and Privacy in Computing and communications, TrustCom-2012

作者： Al-Taharwa, Ismail Adel Lee, Hahn-Ming Jeng, Albert B. Wu, Kuo-Ping Mao, Ching-Hao Wei, Te-En Chen, Shyi-Ming Dept. of Computer Science and Information Engineering National Taiwan University of Science and Technology Taipei Taiwan Institute of Information Science Academia Sinica Taipei Taiwan Dept. of Computer Science Jinwen University of Science and Technology Taipei Taiwan Information and Communication Security Center Institute for Information Industry Taipei Taiwan Graduate Institute of Educational Measurement and Statistics National Taichung University of Education Taichung Taiwan

ISBN: (纸本)9780769547459

JavaScript allows Web-developers to hide intention behind their code inside different looking scripts known as Obfuscated code. Automatic detection of obfuscated code is generally tackled from readability perspective. However, recently obfuscation exhibits patterns that modify both syntax and semantic characteristics while preserving readability characteristic. There are two problems in dealing with readable obfuscation: 1. Difficulty in locating it since it does not manipulate suspicious strings. 2. It is a common and essential practice adopted in both benign codes and malicious codes. In this work, we first investigate why and how readable obfuscation can hinder detection of maliciousness and prevent the static analysis of suspicious scripts. Next, we propose a readable JavaScript obfuscation detector (RedJsod) system to deal with this type of threat. RedJsod is a well defined detector based on variable length context-based feature extraction (VCLFE) scheme that takes advantages of abstract syntax tree (AST) representation of a given JavaScript code to infer run-time behaviors statically. We applied RedJsod to three datasets collected from real world Web-pages to evaluate its effectiveness. Also, we tested RedJsod on well-known readable obfuscation samples cited in related works as a proof of concept illustration. Our experimental results indicated that RedJsod achieved very high detection rates (greater than 97%) in terms of accuracy, eliminated false negatives completely, while at the same time yielded very few false positives. © 2012 IEEE.

关键词： Static analysis

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An Improved Method for Phase Extraction Based on Gray Extremum

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Procedia engineering 2012年 29卷 2355-2359页

作者： Xiu Qin Xiaoping Lou Naiguang Lv Peng Sun School of Photoelectronic Information & Communication Engineering Beijing Information Science & Technology University Beijing 100192 China Beijing Key Laboratory on Measurement and Control of Mechanical and Electrical System Beijing Information Science & Technology University Beijing 100192 China

Surface deformation of an object can be measured by digital shearography through non-contact measurement with a simple device. It is always difficult to remove the noise of the speckle interference. Consequently extracting phase from a single fringe pattern without carrier-frequency is complex. Based on gray extremum, an improved method for phase extraction is proposed by using the improved image binarization algorithm in this paper. Through comparing the average value of eight neighbourhood points around each pixel with threshold value, the quality of binary image can be improved, and then the skeleton line can be extracted. Finally a smooth extremum image can be obtained. Experimental results show that the proposed method is simple, convenient and reliable.

关键词： shearography phase extraction gray extremum method binarization skeleton

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Image mosaicing algorithm for dynamic scenes using multi-scaled PHOG feature and optimal seam

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Moshi Shibie yu Rengong Zhineng/Pattern Recognition and Artificial Intelligence 2012年第4期25卷 624-631页

作者： Zou, Li-Hui Chen, Jie Zhang, Juan Lu, Jing-Hua Key Laboratory of Complex System Intelligent Control and Decision of Ministry of Education School of Automation Beijing Institute of Technology Beijing 100081 China School of Computer and Communication Engineering University of Science and Technology Beijing Beijing 100083 China

Aiming at the problems of registration error and synthetic movement ghost which are caused by moving objects in image mosaicing, a mosaicing algorithm for dynamic scene using multi-scale pyramid histogram of oriented gradients (PHOG) and optimal seam is proposed. Firstly, a new feature, multi-scaled PHOG, is generated by introducing PHOG to multi-scale space corner detections. The feature is used to align images for avoiding the local impact caused by moving objects in image registration. Then, an optimal seam, guaranteeing the minimum difference in geometry and gray value, is searched by graph cut algorithm through constructing an energy function to remove the movement ghost. The experimental results show that the proposed algorithm is efficient in dealing with the problems of image mosaicing with moving objects, and the mosaicing results are satisfactory with high precision.

关键词： Graphic methods

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Corrections to “Evaluations on AC Electrical Characteristics of No-Insulation Coil for Power Devices” [Jun 13 4700604]

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IEEE Transactions on Applied Superconductivity 2013年第5期23卷

作者： Young Jin Hwang Seungyong Hahn Sukjin Choi Hyun Chul Jo Yoon Hyuck Choi Tae Jung Kim Tae Kuk Ko School of Electrical and Electronic Engineering Yonsei University Seoul Korea Francis Bitter Magnet Laboratory Massachusetts Institute of Technology Cambridge MA USA Department of Materials Science and Engineering Korea University Seoul Korea Department of Electrical Power System Measurement and Control Korea Foundation of Polytechnic Colleges Seoul Korea

In the above titled paper (ibid., vol. 23, no. 3, p. 4700604, Jun. 2013), there are errors within some of the texts and figures. The author has corrected these here.

关键词： Superconducting coils Fault currents High-temperature superconductors Insulation Loss measurement Superconducting magnets

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Comparison of sensor configurations for mass flow estimation of turbocharged diesel engines

Lecture Notes in Control and Information Sciences

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Lecture Notes in control and Information Sciences 2012年 418卷 303-326页

作者： Polóni, Tomáš Rohal'-Ilkiv, Boris Alberer, Daniel Del Re, Luigi Johansen, Tor Arne Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering Slovak University of Technology Bratislava Slovakia Institute for Design and Control of Mechatronical Systems Johannes Kepler University Linz Austria Department of Engineering Cybernetics Norwegian University of Science and Technology Trondheim Norway

ISBN: (纸本)9781447122203

The increasing demands on quality of power, emissions and overall performance of combustion engines lay new goals for the hardware and the software development of control systems. High-performance embedded controllers open the possibilities for application of numerical methods to solve the problems of modeling and control of combustion engines. Algorithms for estimation of state and parameters are essential components of many advanced control, monitoring and signal processing engine applications. A widely applicable estimator is given by the Extended Kalman Filter (EKF) which defines a finite memory recursive algorithm suited for real-time implementation, where only the last measurement is used to update the state estimate, based on the past history being approximately summarized by the a priori estimate of the state and the error covariance matrix estimate. The proposed EKF uses an augmented air-path state-space model to estimate unmeasurable mass flow quantities. The EKF algorithm based on the augmented state-space model considerably reduces the modeling errors compared to the open loop estimator simulation and compared to the EKF without the augmentation which is demonstrated on a standard production Diesel engine data. The experimental validation of the observed state quantities is performed against the measured pressures and turbocharger speed data. The estimated mass flow quantities are indirectly validated through the air compressor flow that is directly validated against air mass flow sensor data. Two two-sensor setups are considered in this study. In the first experiment the intake manifold pressure and the turbocharger speed is used. The second experiment uses the intake manifold pressure and the exhaust manifold pressure as the measurement information for the EKF. The second experiment gives more precise mass flow estimate in term of less bias on the estimates, but more variance due to the high frequency exhaust manifold pressure variations caused by the

关键词： Mass transfer

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Cyber-security of SCADA systems

Cyber-security of SCADA systems

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Innovative Smart Grid Technologies (ISGT)

作者： Göran Andersson Peyman Mohajerin Esfahani Maria Vrakopoulou Kostas Margellos John Lygeros André Teixeira György Dán Henrik Sandberg Karl H. Johansson Power Systems Laboratory Department of Electrical Engineering Swiss Federal Institute of Technology (ETH) Zurich Switzerland Automatic Control Laboratory Department of Electrical Engineering Swiss Federal Institute of Technology (ETH) Zurich Switzerland Automatic Control Laboratory School of Electrical Engineering Royal Institute of Technology Sweden Laboratory for Communication Networks School of Electrical Engineering Royal Institute of Technology Stockholm Sweden

After a general introduction of the VIKING EU FP7 project two specific cyber-attack mechanisms, which have been analyzed in the VIKING project, will be discussed in more detail. Firstly an attack and its consequences on the Automatic Generation control (AGC) in a power system are investigated, and secondly the cyber security of State Estimators in SCADA systems is scrutinized.

关键词： Automatic generation control SCADA systems Computer security Power grids Electronic mail

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Herb 2.0: Lessons learned from developing a mobile manipulator for the home

Herb 2.0: Lessons learned from developing a mobile manipulat...

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作者： Srinivasa, Siddhartha S. Berenson, Dmitry Cakmak, Maya Collet, Alvaro Dogar, Mehmet R. Dragan, Anca D. Knepper, Ross A. Niemueller, Tim Strabala, Kyle Vande Weghe, Mike Ziegler, Julius Robotics Institute Carnegie Mellon University Pittsburgh PA 15213 United States Electrical Engineering and Computer Science Department University of California Berkeley Berkeley 94703 United States School of Interactive Computing Georgia Institute of Technology Atlanta GA 30332 United States Knowledge-based Systems Group RWTH Aachen University Aachen 52062 Germany Department of Measurement and Control Systems Karlsruhe Institute of Technology Karlsruhe D-76128 Germany

We present the hardware design, software architecture, and core algorithms of Herb 2.0, a bimanual mobile manipulator developed at the Personal Robotics Lab at Carnegie Mellon University, Pittsburgh, PA. We have developed Herb 2.0 to perform useful tasks for and with people in human environments. We exploit two key paradigms in human environments: that they have structure that a robot can learn, adapt and exploit, and that they demand general-purpose capability in robotic systems. In this paper, we reveal some of the structure present in everyday environments that we have been able to harness for manipulation and interaction, comment on the particular challenges on working in human spaces, and describe some of the lessons we learned from extensively testing our integrated platform in kitchen and office environments. © 2012 IEEE.

关键词： Motion planning

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Research on fault prediction method faced to internal combustion engine group based on IOT

Research on fault prediction method faced to internal combus...

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第四届国际自动化测试与仪器仪表学术会议

作者： Xu Xiaoli Jiang Zhanglei Chen Peng School of Mechanical and Vehicle Engineering Beijing Institute of Technology Key Laboratory of Modern Measurement & Control Technology Ministry of EducationBeijing Information Science and Technology University Department of Environmental Science and Engineering Faculty of Bio-resources Mie University

In order to carry out safety protection in advance and implement predictive maintenance,and also to prevent accident occurrence by using fault prediction method to reveal the fault feature.A fault prediction method faced to internal combustion engine group based on Internet of Things(IOT) is ***'s beneficial to improve the operation stability of key equipment group and promote the emerging IOT technology application in equipment *** fault prediction model mainly includes the system of remote online sample acquisition based on IOT,constructing fault prediction model coupling the physical information and numerical rules information of the mechanical systems,both to reflect the physical nature of the mechanical system,but also reflects the fault indicates numerical rules of the mechanical *** feature is used to predict fault trend in order to ensure safe and stable operation of internal combustion engine group.

关键词： internal combustion engine IOT feature extraction fault prediction

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A novel miniaturized band-pass frequency selective surface

A novel miniaturized band-pass frequency selective surface

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2012 5th Global Symposium on Millimeter-Waves, GSMM 2012

作者： Li, Wanlu Yang, Guohui Zhang, Tong Wu, Qun Hua, Jun Chen, Meiliang Gu, Xuemai School of Electronics and Information Technology Harbin Institute of Technology Harbin 150001 China Department of Microwave Engineering Key Laboratory No.92 West Dazhi Street Harbin 150001 China Fu Foundation School of Engineering and Applied Science Columbia University 116th Street and Broadway New York NY 10027 United States Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang Province 314033 China

ISBN: (纸本)9781467313032

In this paper, a novel band-pass miniaturized FSS is proposed, in which a unit cell consists of four spiral etched slot lines arranged central-symmetrically on a dielectric substrate, and the spiral elements are placed interlaced so that each element is connected to an adjacent one in another unit cell. Simulation results show the FSS has the dimension of a unit cell only 0.060λx0.060λ, where λ represents the wavelength corresponding to the resonant frequency. And the miniaturization is stable with respect to different polarizations and incident angles. Prototype of the FSS is fabricated and tested. The measured results show very good agreement with simulated ones. © 2012 IEEE.

关键词： Frequency selective surfaces

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A dynamic programming algorithm for QoS-aware replica placement in distributed caching systems

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Journal of Convergence Information technology 2012年第12期7卷 226-234页

作者： Wang, Biyao Wang, Jinlin Liu, Xue The Key Lab of Network Communication System and Control The Chinese Academy of Sciences The Key Lab of Network Communication System and Control Anhui Department of Automation University of Science and Technology China National Network New Media Engineering Research Center Institute of Acoustics Chinese Academy of Sciences China

The rapid growth of new information services, especially like new media services, providing content distribution to clients with good quality of service(QoS) while retaining efficient is a great challenge. This paper investigates the QoS-aware replica placement problem (QRPP) for distributed caching system. We propose a dynamic programming algorithm for the problem in general graph, it first ensures the QoS requirement is satisfied of each request, then places the replica along the request forward path to minimize the total cost. The simulation results show the dynamic programming algorithm can achive a good balance between the access latency and the requested availability. When the request is more concentrated, the dynamic programming algorithm can have better performance than the MODULO and LRU both in access latency and requested availability.

关键词： Dynamic programming

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